Carbon Dioxide CO2
Carbon Dioxide CO2
Aeroqual designs and delivers monitors that measure carbon dioxide (CO2). Choose from our perimeter or handheld air monitoring range.
Here we cover CO2 measurement principles and specifications.
Overview of carbon dioxide
Carbon dioxide (CO2) is a significant greenhouse gas that is monitored globally due to its impact on the earth’s climate. Anthropogenic sources of CO2 are typically combustion processes, including burning fossil fuels for energy production, industrial activities, and transportation.
Increasing concentrations of atmospheric CO2 have been shown to have profound implications for the earth's climate, leading to rising temperatures, altered weather patterns, and long-term environmental changes.
Perimeter air quality monitor
The CO2 analyzer module features in our perimeter air quality monitor: AQM 65 Monitoring Station.
Measurement principle
The carbon dioxide analyzer module is a continuous sensor-based analyzer used to measure CO2 in ambient air. It is primarily used to quantify greenhouse gas emissions. The CO2 analyzer module incorporates near dispersive infrared receptor (NDIR) technology. Carbon dioxide will absorb infrared light of a specific wavelength. This absorbance is proportional to the concentration of CO2 in the air. NDIR sensors are highly selective to CO2 and therefore well suited to indicative ambient monitoring of this important greenhouse gas.
Module specifications
The CO2 module performance specifications are given in the table below.
CO2 Analyzer Module
Range (ppm)
0 - 2000
Display Resolution (ppm)
1
Noise: Zero (ppm); Span (% of reading)
5; 1%
Limit of Detection (ppm)
10
Precision
3% of reading or 10 ppm
Linearity (% of FS)
2%
24 hr Drift: Zero (ppm); Span (% of FS)
1; 0.6%
Handheld air monitors and fixed indoor monitors
The CO2 sensor head features in our handheld air quality monitors: Ranger and S Series, and indoor fixed monitor range Series 900.
Carbon dioxide sensor head measurement principle
The carbon dioxide sensor head uses near dispersive infrared receptor (NDIR) technology. CO2 will absorb infrared light of a specific wavelength. This absorbance is proportional to the concentration of CO2 in the air. NDIR sensors are highly selective to CO2 and therefore well suited to indicative ambient monitoring of this important greenhouse gas.
Carbon dioxide sensor head specifications
The table below contains the carbon dioxide sensor head specifications. These can be used on our Ranger, S Series and Series 900 products. The 0-5000 ppm is designed for monitoring indoor air quality and industrial health and safety, while the 0-2000 ppm range can do that plus outdoor environmental monitoring.
Sensor code
CD
CE
Sensor type
NDIR
NDIR
Range (ppm)
0-2000
0-5000
Detection limit (ppm)
10
20
Accuracy of factory calibration
<±10 ppm + 5%
<±20 ppm + 5%
Display resolution (ppm)
1
1
Response time (seconds)
120
120
Products that measure carbon dioxide
The following products measure carbon dioxide, as well as particulate matter and gaseous pollutants in real-time.
Articles
Case Study - Indoor Air Quality
Portable Real-Time Monitoring System Used in MailOnline Study of London Indoor Air
Blog - Outdoor
Aeroqual and ASTM Establish Global Standard for Evaluating Outdoor Sensor Performance
Case Study - Indoor Air Quality
Air Monitoring Helps Swedish Shopping Centres Improve Customer Focus, Health, and Wellbeing
Inquire about our carbon dioxide products
Our CO2 advanced monitoring systems deliver hyper-local data and real-time alerts, giving you actionable data to make the decisions that matter.